Poisoning dream meaning is explained below using 1 different source. Each interpretation is shown with its source.
Interpretation 1 — Martha Clarke
To dream that you poison someone is a symptom of life full of tensions and conflicts with the people around you. You should try a more peaceful communication with them. To be poisoned in dreams, however, alerts of the arrival of bad news about a relative who is in trouble.
If you poison yourself it says that in real life you are carrying something out that is harmful to you.
Source: The Big Dictionary of Dreams • Author: Martha Clarke